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Finding the Fourth Proportional to 248.92, 343.50 and 216.28

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Solution

The fourth proportional to 248.92, 343.50 and 216.28 is: 298.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.92 : 343.50 = 216.28 : x
  2. Step 2: Convert to fraction form
    248.92/343.50 = 216.28/x
  3. Step 3: Cross multiply
    248.92x = 343.50 × 216.28
  4. Step 4: Simplify right side
    248.92x = 74,292.18
  5. Step 5: Solve for x
    x = 74,292.18/248.92
  6. Step 6: Final answer
    x = 298.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.